1212 lines
27 KiB
C
1212 lines
27 KiB
C
/*
|
|
* Written by Julian Elischer (julian@tfs.com)
|
|
* for TRW Financial Systems for use under the MACH(2.5) operating system.
|
|
*
|
|
* TRW Financial Systems, in accordance with their agreement with Carnegie
|
|
* Mellon University, makes this software available to CMU to distribute
|
|
* or use in any manner that they see fit as long as this message is kept with
|
|
* the software. For this reason TFS also grants any other persons or
|
|
* organisations permission to use or modify this software.
|
|
*
|
|
* TFS supplies this software to be publicly redistributed
|
|
* on the understanding that TFS is not responsible for the correct
|
|
* functioning of this software in any circumstances.
|
|
*
|
|
* $Id: aha1742.c,v 1.14 1993/07/28 02:21:11 cgd Exp $
|
|
*/
|
|
|
|
#include "ahb.h"
|
|
|
|
#include "sys/types.h"
|
|
#include "sys/param.h"
|
|
#include "sys/systm.h"
|
|
#include "sys/errno.h"
|
|
#include "sys/ioctl.h"
|
|
#include "sys/buf.h"
|
|
#include "sys/proc.h"
|
|
#include "sys/user.h"
|
|
|
|
#include "i386/include/pio.h"
|
|
#include "i386/isa/isa_device.h"
|
|
#include "sys/dkbad.h"
|
|
#include "sys/disklabel.h"
|
|
#include "scsi/scsi_all.h"
|
|
#include "scsi/scsiconf.h"
|
|
|
|
#ifdef DDB
|
|
int Debugger();
|
|
#else DDB
|
|
#define Debugger() panic("should call debugger here (adaptec.c)")
|
|
#endif DDB
|
|
|
|
typedef unsigned long int physaddr;
|
|
|
|
#define PHYSTOKV(x) (x | 0xFE000000)
|
|
#define KVTOPHYS(x) vtophys(x)
|
|
|
|
extern int delaycount; /* from clock setup code */
|
|
#define NUM_CONCURRENT 16 /* number of concurrent ops per board */
|
|
#define AHB_NSEG 33 /* number of dma segments supported */
|
|
#define FUDGE(X) (X>>1) /* our loops are slower than spinwait() */
|
|
|
|
|
|
/*
|
|
* AHA1740 standard EISA Host ID regs (Offset from slot base)
|
|
*/
|
|
#define HID0 0xC80 /* 0,1: msb of ID2, 3-7: ID1 */
|
|
#define HID1 0xC81 /* 0-4: ID3, 4-7: LSB ID2 */
|
|
#define HID2 0xC82 /* product, 0=174[20] 1 = 1744 */
|
|
#define HID3 0xC83 /* firmware revision */
|
|
|
|
#define CHAR1(B1,B2) (((B1>>2) & 0x1F) | '@')
|
|
#define CHAR2(B1,B2) (((B1<<3) & 0x18) | ((B2>>5) & 0x7)|'@')
|
|
#define CHAR3(B1,B2) ((B2 & 0x1F) | '@')
|
|
|
|
/* AHA1740 EISA board control registers (Offset from slot base) */
|
|
#define EBCTRL 0xC84
|
|
#define CDEN 0x01
|
|
/*
|
|
* AHA1740 EISA board mode registers (Offset from slot base)
|
|
*/
|
|
#define PORTADDR 0xCC0
|
|
#define PORTADDR_ENHANCED 0x80
|
|
#define BIOSADDR 0xCC1
|
|
#define INTDEF 0xCC2
|
|
#define SCSIDEF 0xCC3
|
|
#define BUSDEF 0xCC4
|
|
#define RESV0 0xCC5
|
|
#define RESV1 0xCC6
|
|
#define RESV2 0xCC7
|
|
|
|
/* bit definitions for INTDEF */
|
|
#define INT9 0x00
|
|
#define INT10 0x01
|
|
#define INT11 0x02
|
|
#define INT12 0x03
|
|
#define INT14 0x05
|
|
#define INT15 0x06
|
|
#define INTHIGH 0x08 /* int high=ACTIVE (else edge) */
|
|
#define INTEN 0x10
|
|
|
|
/* bit definitions for SCSIDEF */
|
|
#define HSCSIID 0x0F /* our SCSI ID */
|
|
#define RSTPWR 0x10 /* reset scsi bus on power up or reset */
|
|
|
|
/* bit definitions for BUSDEF */
|
|
#define B0uS 0x00 /* give up bus immediatly */
|
|
#define B4uS 0x01 /* delay 4uSec. */
|
|
#define B8uS 0x02
|
|
|
|
/*
|
|
* AHA1740 ENHANCED mode mailbox control regs (Offset from slot base)
|
|
*/
|
|
#define MBOXOUT0 0xCD0
|
|
#define MBOXOUT1 0xCD1
|
|
#define MBOXOUT2 0xCD2
|
|
#define MBOXOUT3 0xCD3
|
|
|
|
#define ATTN 0xCD4
|
|
#define G2CNTRL 0xCD5
|
|
#define G2INTST 0xCD6
|
|
#define G2STAT 0xCD7
|
|
|
|
#define MBOXIN0 0xCD8
|
|
#define MBOXIN1 0xCD9
|
|
#define MBOXIN2 0xCDA
|
|
#define MBOXIN3 0xCDB
|
|
|
|
#define G2STAT2 0xCDC
|
|
|
|
/*
|
|
* Bit definitions for the 5 control/status registers
|
|
*/
|
|
#define ATTN_TARGET 0x0F
|
|
#define ATTN_OPCODE 0xF0
|
|
#define OP_IMMED 0x10
|
|
#define AHB_TARG_RESET 0x80
|
|
#define OP_START_ECB 0x40
|
|
#define OP_ABORT_ECB 0x50
|
|
|
|
#define G2CNTRL_SET_HOST_READY 0x20
|
|
#define G2CNTRL_CLEAR_EISA_INT 0x40
|
|
#define G2CNTRL_HARD_RESET 0x80
|
|
|
|
#define G2INTST_TARGET 0x0F
|
|
#define G2INTST_INT_STAT 0xF0
|
|
#define AHB_ECB_OK 0x10
|
|
#define AHB_ECB_RECOVERED 0x50
|
|
#define AHB_HW_ERR 0x70
|
|
#define AHB_IMMED_OK 0xA0
|
|
#define AHB_ECB_ERR 0xC0
|
|
#define AHB_ASN 0xD0 /* for target mode */
|
|
#define AHB_IMMED_ERR 0xE0
|
|
|
|
#define G2STAT_BUSY 0x01
|
|
#define G2STAT_INT_PEND 0x02
|
|
#define G2STAT_MBOX_EMPTY 0x04
|
|
|
|
#define G2STAT2_HOST_READY 0x01
|
|
|
|
|
|
struct ahb_dma_seg {
|
|
physaddr addr;
|
|
long len;
|
|
};
|
|
|
|
struct ahb_ecb_status {
|
|
u_short status;
|
|
# define ST_DON 0x0001
|
|
# define ST_DU 0x0002
|
|
# define ST_QF 0x0008
|
|
# define ST_SC 0x0010
|
|
# define ST_DO 0x0020
|
|
# define ST_CH 0x0040
|
|
# define ST_INT 0x0080
|
|
# define ST_ASA 0x0100
|
|
# define ST_SNS 0x0200
|
|
# define ST_INI 0x0800
|
|
# define ST_ME 0x1000
|
|
# define ST_ECA 0x4000
|
|
u_char ha_status;
|
|
# define HS_OK 0x00
|
|
# define HS_CMD_ABORTED_HOST 0x04
|
|
# define HS_CMD_ABORTED_ADAPTER 0x05
|
|
# define HS_TIMED_OUT 0x11
|
|
# define HS_HARDWARE_ERR 0x20
|
|
# define HS_SCSI_RESET_ADAPTER 0x22
|
|
# define HS_SCSI_RESET_INCOMING 0x23
|
|
u_char targ_status;
|
|
# define TS_OK 0x00
|
|
# define TS_CHECK_CONDITION 0x02
|
|
# define TS_BUSY 0x08
|
|
u_long resid_count;
|
|
u_long resid_addr;
|
|
u_short addit_status;
|
|
u_char sense_len;
|
|
u_char unused[9];
|
|
u_char cdb[6];
|
|
};
|
|
|
|
|
|
struct ecb {
|
|
u_char opcode;
|
|
# define ECB_SCSI_OP 0x01
|
|
u_char :4;
|
|
u_char options:3;
|
|
u_char :1;
|
|
short opt1;
|
|
# define ECB_CNE 0x0001
|
|
# define ECB_DI 0x0080
|
|
# define ECB_SES 0x0400
|
|
# define ECB_S_G 0x1000
|
|
# define ECB_DSB 0x4000
|
|
# define ECB_ARS 0x8000
|
|
short opt2;
|
|
# define ECB_LUN 0x0007
|
|
# define ECB_TAG 0x0008
|
|
# define ECB_TT 0x0030
|
|
# define ECB_ND 0x0040
|
|
# define ECB_DAT 0x0100
|
|
# define ECB_DIR 0x0200
|
|
# define ECB_ST 0x0400
|
|
# define ECB_CHK 0x0800
|
|
# define ECB_REC 0x4000
|
|
# define ECB_NRB 0x8000
|
|
u_short unused1;
|
|
physaddr data;
|
|
u_long datalen;
|
|
physaddr status;
|
|
physaddr chain;
|
|
short unused2;
|
|
short unused3;
|
|
physaddr sense;
|
|
u_char senselen;
|
|
u_char cdblen;
|
|
short cksum;
|
|
u_char cdb[12];
|
|
/*-----------------end of hardware supported fields----------------*/
|
|
struct ecb *next; /* in free list */
|
|
struct scsi_xfer *xs; /* the scsi_xfer for this cmd */
|
|
long int delta; /* difference from previous*/
|
|
struct ecb *later,*sooner;
|
|
int flags;
|
|
#define ECB_FREE 0
|
|
#define ECB_ACTIVE 1
|
|
#define ECB_ABORTED 2
|
|
#define ECB_IMMED 4
|
|
#define ECB_IMMED_FAIL 8
|
|
struct ahb_dma_seg ahb_dma[AHB_NSEG];
|
|
struct ahb_ecb_status ecb_status;
|
|
struct scsi_sense_data ecb_sense;
|
|
};
|
|
|
|
struct ecb *ahb_soonest = (struct ecb *)0;
|
|
struct ecb *ahb_latest = (struct ecb *)0;
|
|
long int ahb_furtherest = 0; /* longest time in the timeout queue */
|
|
|
|
struct ahb_data {
|
|
int flags;
|
|
#define AHB_INIT 0x01;
|
|
int baseport;
|
|
struct ecb ecbs[NUM_CONCURRENT];
|
|
struct ecb *free_ecb;
|
|
int our_id; /* our scsi id */
|
|
int vect;
|
|
struct ecb *immed_ecb; /* an outstanding immediete command */
|
|
} ahb_data[NAHB];
|
|
|
|
struct ecb *cheat;
|
|
|
|
#define MAX_SLOTS 8
|
|
static ahb_slot = 0; /* slot last board was found in */
|
|
static ahb_unit = 0;
|
|
int ahb_debug = 0;
|
|
#define AHB_SHOWECBS 0x01
|
|
#define AHB_SHOWINTS 0x02
|
|
#define AHB_SHOWCMDS 0x04
|
|
#define AHB_SHOWMISC 0x08
|
|
#define FAIL 1
|
|
#define SUCCESS 0
|
|
#define PAGESIZ 4096
|
|
|
|
|
|
int ahbprobe(struct isa_device *);
|
|
int ahbprobe1(struct isa_device *);
|
|
int ahb_attach(struct isa_device *);
|
|
long int ahb_adapter_info(int);
|
|
int ahbintr(int);
|
|
void ahb_done(int, struct ecb *, int);
|
|
void ahb_free_ecb(int, struct ecb *, int);
|
|
struct ecb * ahb_get_ecb(int, int);
|
|
int ahb_init(int);
|
|
void ahbminphys(struct buf *);
|
|
int ahb_scsi_cmd(struct scsi_xfer *);
|
|
void ahb_add_timeout(struct ecb *, int);
|
|
void ahb_remove_timeout(struct ecb *);
|
|
void ahb_timeout(int);
|
|
void ahb_show_scsi_cmd(struct scsi_xfer *);
|
|
void ahb_print_ecb(struct ecb *);
|
|
void ahb_print_active_ecb(void);
|
|
|
|
|
|
struct isa_driver ahbdriver = {
|
|
ahbprobe,
|
|
ahb_attach,
|
|
"ahb"
|
|
};
|
|
|
|
struct scsi_switch ahb_switch = {
|
|
"ahb",
|
|
ahb_scsi_cmd,
|
|
ahbminphys,
|
|
0,
|
|
0,
|
|
ahb_adapter_info,
|
|
0, 0, 0
|
|
};
|
|
|
|
|
|
/*
|
|
* Function to send a command out through a mailbox
|
|
*/
|
|
void
|
|
ahb_send_mbox(int unit, int opcode, int target, struct ecb *ecb)
|
|
{
|
|
int port = ahb_data[unit].baseport;
|
|
int spincount = FUDGE(delaycount) * 1; /* 1ms should be enough */
|
|
int stport = port + G2STAT, s;
|
|
|
|
s = splbio();
|
|
while( ((inb(stport) &
|
|
(G2STAT_BUSY | G2STAT_MBOX_EMPTY)) != G2STAT_MBOX_EMPTY)
|
|
&& spincount--)
|
|
;
|
|
if(spincount == -1) {
|
|
printf("ahb%d: board not responding\n",unit);
|
|
Debugger();
|
|
}
|
|
|
|
outl(port+MBOXOUT0, KVTOPHYS(ecb)); /* don't know this will work */
|
|
outb(port+ATTN, opcode|target);
|
|
splx(s);
|
|
}
|
|
|
|
/*
|
|
* Function to poll for command completion when in poll mode
|
|
* wait is in msec
|
|
*/
|
|
int
|
|
ahb_poll(int unit, int wait)
|
|
{
|
|
int port = ahb_data[unit].baseport;
|
|
int spincount = FUDGE(delaycount) * wait; /* in msec */
|
|
int stport = port + G2STAT;
|
|
int start = spincount;
|
|
|
|
retry:
|
|
while( spincount-- && (!(inb(stport) & G2STAT_INT_PEND)))
|
|
;
|
|
if(spincount == -1) {
|
|
printf("ahb%d: board not responding\n",unit);
|
|
return(EIO);
|
|
}
|
|
if( (int)cheat != PHYSTOKV(inl(port+MBOXIN0)) ) {
|
|
printf("discarding %x ", inl(port+MBOXIN0));
|
|
outb(port + G2CNTRL, G2CNTRL_CLEAR_EISA_INT);
|
|
spinwait(50);
|
|
goto retry;
|
|
}
|
|
ahbintr(unit);
|
|
return(0);
|
|
}
|
|
/*
|
|
* Function to send an immediate type command to the adapter
|
|
*/
|
|
void
|
|
ahb_send_immed(int unit, int target, u_long cmd)
|
|
{
|
|
int port = ahb_data[unit].baseport;
|
|
int spincount = FUDGE(delaycount) * 1; /* 1ms should be enough */
|
|
int s = splbio();
|
|
int stport = port + G2STAT;
|
|
|
|
while( ((inb(stport) &
|
|
(G2STAT_BUSY | G2STAT_MBOX_EMPTY)) != (G2STAT_MBOX_EMPTY)) &&
|
|
spincount--)
|
|
;
|
|
if(spincount == -1) {
|
|
printf("ahb%d: board not responding\n",unit);
|
|
Debugger();
|
|
}
|
|
|
|
outl(port + MBOXOUT0, cmd); /* don't know this will work */
|
|
outb(port + G2CNTRL, G2CNTRL_SET_HOST_READY);
|
|
outb(port + ATTN, OP_IMMED | target);
|
|
splx(s);
|
|
}
|
|
|
|
/*
|
|
* Check the slots looking for a board we recognise
|
|
* If we find one, note it's address (slot) and call
|
|
* the actual probe routine to check it out.
|
|
*/
|
|
int
|
|
ahbprobe(struct isa_device *dev)
|
|
{
|
|
int port;
|
|
u_char byte1,byte2,byte3;
|
|
|
|
ahb_slot++;
|
|
while (ahb_slot<8) {
|
|
port = 0x1000 * ahb_slot;
|
|
byte1 = inb(port + HID0);
|
|
byte2 = inb(port + HID1);
|
|
byte3 = inb(port + HID2);
|
|
if(byte1 == 0xff) {
|
|
ahb_slot++;
|
|
continue;
|
|
}
|
|
if ((CHAR1(byte1,byte2) == 'A')
|
|
&& (CHAR2(byte1,byte2) == 'D')
|
|
&& (CHAR3(byte1,byte2) == 'P')
|
|
&& ((byte3 == 0 ) || (byte3 == 1))) {
|
|
dev->id_iobase = port;
|
|
return ahbprobe1(dev);
|
|
}
|
|
ahb_slot++;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Check if the device can be found at the port given *
|
|
* and if so, set it up ready for further work *
|
|
* as an argument, takes the isa_device structure from *
|
|
* autoconf.c *
|
|
*/
|
|
int
|
|
ahbprobe1(struct isa_device *dev)
|
|
{
|
|
int unit = ahb_unit;
|
|
|
|
dev->id_unit = unit;
|
|
ahb_data[unit].baseport = dev->id_iobase;
|
|
if(unit >= NAHB) {
|
|
printf("ahb: unit number (%d) too high\n",unit);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Try initialise a unit at this location
|
|
* sets up dma and bus speed, loads ahb_data[unit].vect*
|
|
*/
|
|
if (ahb_init(unit) != 0)
|
|
return 0;
|
|
|
|
/* If it's there, put in it's interrupt vectors */
|
|
dev->id_irq = (1 << ahb_data[unit].vect);
|
|
dev->id_drq = -1; /* using EISA dma */
|
|
ahb_unit++;
|
|
return 0x1000;
|
|
}
|
|
|
|
/*
|
|
* Attach all the sub-devices we can find
|
|
*/
|
|
int
|
|
ahb_attach(struct isa_device *dev)
|
|
{
|
|
static int firsttime;
|
|
int masunit = dev->id_masunit;
|
|
int r;
|
|
|
|
r = scsi_attach(masunit, ahb_data[masunit].our_id, &ahb_switch,
|
|
&dev->id_physid, &dev->id_unit, dev->id_flags);
|
|
|
|
/* only one for all boards */
|
|
if(firsttime==0) {
|
|
firsttime = 1;
|
|
ahb_timeout(0);
|
|
}
|
|
return r;
|
|
}
|
|
|
|
/*
|
|
* Return some information to the caller about *
|
|
* the adapter and it's capabilities *
|
|
* 2 outstanding requests at a time per device
|
|
*/
|
|
long int
|
|
ahb_adapter_info(int unit)
|
|
{
|
|
return 2;
|
|
}
|
|
|
|
/*
|
|
* Catch an interrupt from the adaptor
|
|
*/
|
|
int
|
|
ahbintr(int unit)
|
|
{
|
|
struct ecb *ecb;
|
|
unsigned char stat;
|
|
register i;
|
|
u_char ahbstat;
|
|
int target;
|
|
long int mboxval;
|
|
|
|
int port = ahb_data[unit].baseport;
|
|
|
|
if(scsi_debug & PRINTROUTINES)
|
|
printf("ahbintr ");
|
|
|
|
while(inb(port + G2STAT) & G2STAT_INT_PEND) {
|
|
/*
|
|
* First get all the information and then
|
|
* acknowlege the interrupt
|
|
*/
|
|
ahbstat = inb(port + G2INTST);
|
|
target = ahbstat & G2INTST_TARGET;
|
|
stat = ahbstat & G2INTST_INT_STAT;
|
|
mboxval = inl(port + MBOXIN0);/* don't know this will work */
|
|
outb(port + G2CNTRL, G2CNTRL_CLEAR_EISA_INT);
|
|
if(scsi_debug & TRACEINTERRUPTS)
|
|
printf("status = 0x%x ",stat);
|
|
|
|
/*
|
|
* Process the completed operation
|
|
*/
|
|
if(stat == AHB_ECB_OK)
|
|
ecb = (struct ecb *)PHYSTOKV(mboxval);
|
|
else {
|
|
switch(stat) {
|
|
case AHB_IMMED_OK:
|
|
ecb = ahb_data[unit].immed_ecb;
|
|
ahb_data[unit].immed_ecb = 0;
|
|
break;
|
|
case AHB_IMMED_ERR:
|
|
ecb = ahb_data[unit].immed_ecb;
|
|
ecb->flags |= ECB_IMMED_FAIL;
|
|
ahb_data[unit].immed_ecb = 0;
|
|
break;
|
|
case AHB_ASN: /* for target mode */
|
|
ecb = 0;
|
|
break;
|
|
case AHB_HW_ERR:
|
|
ecb = 0;
|
|
break;
|
|
case AHB_ECB_RECOVERED:
|
|
ecb = (struct ecb *)PHYSTOKV(mboxval);
|
|
break;
|
|
case AHB_ECB_ERR:
|
|
ecb = (struct ecb *)PHYSTOKV(mboxval);
|
|
break;
|
|
default:
|
|
printf(" Unknown return from ahb%d(%x)\n",unit,ahbstat);
|
|
ecb=0;
|
|
}
|
|
}
|
|
if(ecb) {
|
|
if(ahb_debug & AHB_SHOWCMDS )
|
|
ahb_show_scsi_cmd(ecb->xs);
|
|
if((ahb_debug & AHB_SHOWECBS) && ecb)
|
|
printf("<int ecb(%x)>",ecb);
|
|
ahb_remove_timeout(ecb);
|
|
ahb_done(unit, ecb, (stat==AHB_ECB_OK)? SUCCESS: FAIL);
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* We have a ecb which has been processed by the
|
|
* adaptor, now we look to see how the operation
|
|
* went.
|
|
*/
|
|
void
|
|
ahb_done(int unit, struct ecb *ecb, int state)
|
|
{
|
|
struct ahb_ecb_status *stat = &ecb->ecb_status;
|
|
struct scsi_sense_data *s1,*s2;
|
|
struct scsi_xfer *xs = ecb->xs;
|
|
|
|
if(scsi_debug & (PRINTROUTINES | TRACEINTERRUPTS))
|
|
printf("ahb_done ");
|
|
|
|
/*
|
|
* Otherwise, put the results of the operation
|
|
* into the xfer and call whoever started it
|
|
*/
|
|
if(ecb->flags & ECB_IMMED) {
|
|
if(ecb->flags & ECB_IMMED_FAIL)
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
goto done;
|
|
}
|
|
if ( (state == SUCCESS) || (xs->flags & SCSI_ERR_OK)) {
|
|
/* All went correctly OR errors expected */
|
|
xs->resid = 0;
|
|
xs->error = 0;
|
|
} else {
|
|
s1 = &(ecb->ecb_sense);
|
|
s2 = &(xs->sense);
|
|
|
|
if(stat->ha_status) {
|
|
switch(stat->ha_status) {
|
|
case HS_SCSI_RESET_ADAPTER:
|
|
break;
|
|
case HS_SCSI_RESET_INCOMING:
|
|
break;
|
|
case HS_CMD_ABORTED_HOST: /* No response */
|
|
case HS_CMD_ABORTED_ADAPTER: /* No response */
|
|
break;
|
|
case HS_TIMED_OUT: /* No response */
|
|
if (ahb_debug & AHB_SHOWMISC)
|
|
printf("timeout reported back\n");
|
|
xs->error = XS_TIMEOUT;
|
|
break;
|
|
default:
|
|
/* Other scsi protocol messes */
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
if (ahb_debug & AHB_SHOWMISC)
|
|
printf("unexpected ha_status: %x\n",
|
|
stat->ha_status);
|
|
}
|
|
|
|
} else {
|
|
switch(stat->targ_status) {
|
|
case TS_CHECK_CONDITION:
|
|
*s2 = *s1;
|
|
xs->error = XS_SENSE;
|
|
break;
|
|
case TS_BUSY:
|
|
xs->error = XS_BUSY;
|
|
break;
|
|
default:
|
|
if (ahb_debug & AHB_SHOWMISC)
|
|
printf("unexpected targ_status: %x\n",
|
|
stat->targ_status);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
}
|
|
}
|
|
}
|
|
|
|
done:
|
|
xs->flags |= ITSDONE;
|
|
ahb_free_ecb(unit, ecb, xs->flags);
|
|
if(xs->when_done)
|
|
(*(xs->when_done))(xs->done_arg,xs->done_arg2);
|
|
}
|
|
|
|
/*
|
|
* A ecb (and hence a mbx-out is put onto the
|
|
* free list.
|
|
*/
|
|
void
|
|
ahb_free_ecb(int unit, struct ecb *ecb, int flags)
|
|
{
|
|
unsigned int opri;
|
|
|
|
if(scsi_debug & PRINTROUTINES)
|
|
printf("ecb%d(0x%x)> ",unit,flags);
|
|
if (!(flags & SCSI_NOMASK))
|
|
opri = splbio();
|
|
|
|
ecb->next = ahb_data[unit].free_ecb;
|
|
ahb_data[unit].free_ecb = ecb;
|
|
ecb->flags = ECB_FREE;
|
|
|
|
/*
|
|
* If there were none, wake abybody waiting for
|
|
* one to come free, starting with queued entries*
|
|
*/
|
|
if (!ecb->next)
|
|
wakeup((caddr_t)&ahb_data[unit].free_ecb);
|
|
|
|
if (!(flags & SCSI_NOMASK))
|
|
splx(opri);
|
|
}
|
|
|
|
/*
|
|
* Get a free ecb (and hence mbox-out entry)
|
|
*/
|
|
struct ecb *
|
|
ahb_get_ecb(int unit, int flags)
|
|
{
|
|
unsigned opri;
|
|
struct ecb *rc;
|
|
|
|
if(scsi_debug & PRINTROUTINES)
|
|
printf("<ecb%d(0x%x) ", unit, flags);
|
|
if (!(flags & SCSI_NOMASK))
|
|
opri = splbio();
|
|
|
|
/*
|
|
* If we can and have to, sleep waiting for one
|
|
* to come free
|
|
*/
|
|
while ((!(rc = ahb_data[unit].free_ecb)) && (!(flags & SCSI_NOSLEEP)))
|
|
sleep((caddr_t)&ahb_data[unit].free_ecb, PRIBIO);
|
|
|
|
if (rc) {
|
|
ahb_data[unit].free_ecb = rc->next;
|
|
rc->flags = ECB_ACTIVE;
|
|
}
|
|
|
|
if (!(flags & SCSI_NOMASK))
|
|
splx(opri);
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Start the board, ready for normal operation
|
|
*/
|
|
int
|
|
ahb_init(int unit)
|
|
{
|
|
int port = ahb_data[unit].baseport;
|
|
int intdef;
|
|
int spincount = FUDGE(delaycount) * 1000; /* 1 sec enough? */
|
|
int i;
|
|
int stport = port + G2STAT;
|
|
|
|
#define NO_NO 1
|
|
#ifdef NO_NO
|
|
/*
|
|
* reset board, If it doesn't respond, assume
|
|
* that it's not there.. good for the probe
|
|
*/
|
|
outb(port + EBCTRL,CDEN); /* enable full card */
|
|
outb(port + PORTADDR,PORTADDR_ENHANCED);
|
|
|
|
outb(port + G2CNTRL,G2CNTRL_HARD_RESET);
|
|
spinwait(1);
|
|
outb(port + G2CNTRL,0);
|
|
spinwait(10);
|
|
while( (inb(stport) & G2STAT_BUSY ) && spincount--)
|
|
;
|
|
if(spincount == -1) {
|
|
if (ahb_debug & AHB_SHOWMISC)
|
|
printf("ahb_init: No answer from bt742a board\n");
|
|
return(ENXIO);
|
|
}
|
|
|
|
i = inb(port + MBOXIN0) & 0xff;
|
|
if(i) {
|
|
printf("self test failed, val = 0x%x\n",i);
|
|
return(EIO);
|
|
}
|
|
#endif
|
|
|
|
while( inb(stport) & G2STAT_INT_PEND) {
|
|
printf(".");
|
|
outb(port + G2CNTRL, G2CNTRL_CLEAR_EISA_INT);
|
|
spinwait(10);
|
|
}
|
|
outb(port + EBCTRL,CDEN); /* enable full card */
|
|
outb(port + PORTADDR,PORTADDR_ENHANCED);
|
|
|
|
/*
|
|
* Assume we have a board at this stage
|
|
* setup dma channel from jumpers and save int
|
|
* level
|
|
*/
|
|
|
|
intdef = inb(port + INTDEF);
|
|
switch(intdef & 0x07) {
|
|
case INT9:
|
|
ahb_data[unit].vect = 9;
|
|
break;
|
|
case INT10:
|
|
ahb_data[unit].vect = 10;
|
|
break;
|
|
case INT11:
|
|
ahb_data[unit].vect = 11;
|
|
break;
|
|
case INT12:
|
|
ahb_data[unit].vect = 12;
|
|
break;
|
|
case INT14:
|
|
ahb_data[unit].vect = 14;
|
|
break;
|
|
case INT15:
|
|
ahb_data[unit].vect = 15;
|
|
break;
|
|
default:
|
|
ahb_data[unit].vect = -1;
|
|
printf("ahb%d: illegal irq setting\n", unit);
|
|
return(EIO);
|
|
}
|
|
|
|
outb(port + INTDEF, intdef|INTEN); /* make sure we can interrupt */
|
|
ahb_data[unit].our_id = (inb(port + SCSIDEF) & HSCSIID);
|
|
|
|
/*
|
|
* link up all our ECBs into a free list
|
|
*/
|
|
for (i=0; i < NUM_CONCURRENT; i++) {
|
|
ahb_data[unit].ecbs[i].next = ahb_data[unit].free_ecb;
|
|
ahb_data[unit].free_ecb = &ahb_data[unit].ecbs[i];
|
|
ahb_data[unit].free_ecb->flags = ECB_FREE;
|
|
}
|
|
|
|
/*
|
|
* Note that we are going and return (to probe)
|
|
*/
|
|
ahb_data[unit].flags |= AHB_INIT;
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
ahbminphys(struct buf *bp)
|
|
{
|
|
if(bp->b_bcount > ((AHB_NSEG-1) * PAGESIZ))
|
|
bp->b_bcount = ((AHB_NSEG-1) * PAGESIZ);
|
|
}
|
|
|
|
/*
|
|
* start a scsi operation given the command and
|
|
* the data address. Also needs the unit, target
|
|
* and lu
|
|
*/
|
|
int
|
|
ahb_scsi_cmd(struct scsi_xfer *xs)
|
|
{
|
|
struct scsi_sense_data *s1,*s2;
|
|
struct ecb *ecb;
|
|
struct ahb_dma_seg *sg;
|
|
int seg; /* scatter gather seg being worked on */
|
|
int i = 0;
|
|
int rc = 0;
|
|
int thiskv;
|
|
physaddr thisphys,nextphys;
|
|
int unit =xs->adapter;
|
|
int bytes_this_seg,bytes_this_page,datalen,flags;
|
|
struct iovec *iovp;
|
|
int s;
|
|
if(scsi_debug & PRINTROUTINES)
|
|
printf("ahb_scsi_cmd ");
|
|
/*
|
|
* get a ecb (mbox-out) to use. If the transfer
|
|
* is from a buf (possibly from interrupt time)
|
|
* then we can't allow it to sleep
|
|
*/
|
|
flags = xs->flags;
|
|
if(xs->bp) flags |= (SCSI_NOSLEEP); /* just to be sure */
|
|
if(flags & ITSDONE) {
|
|
printf("Already done?");
|
|
xs->flags &= ~ITSDONE;
|
|
}
|
|
if( !(flags & INUSE) ) {
|
|
printf("Not in use?");
|
|
xs->flags |= INUSE;
|
|
}
|
|
if (!(ecb = ahb_get_ecb(unit,flags))) {
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
return(TRY_AGAIN_LATER);
|
|
}
|
|
|
|
cheat = ecb;
|
|
|
|
if(ahb_debug & AHB_SHOWECBS)
|
|
printf("<start ecb(%x)>",ecb);
|
|
if(scsi_debug & SHOWCOMMANDS)
|
|
ahb_show_scsi_cmd(xs);
|
|
|
|
ecb->xs = xs;
|
|
/*
|
|
* If it's a reset, we need to do an 'immediate'
|
|
* command, and store it's ccb for later
|
|
* if there is already an immediate waiting,
|
|
* then WE must wait
|
|
*/
|
|
if(flags & SCSI_RESET) {
|
|
ecb->flags |= ECB_IMMED;
|
|
if(ahb_data[unit].immed_ecb)
|
|
return(TRY_AGAIN_LATER);
|
|
|
|
ahb_data[unit].immed_ecb = ecb;
|
|
if (!(flags & SCSI_NOMASK)) {
|
|
s = splbio();
|
|
ahb_send_immed(unit,xs->targ,AHB_TARG_RESET);
|
|
ahb_add_timeout(ecb,xs->timeout);
|
|
splx(s);
|
|
return(SUCCESSFULLY_QUEUED);
|
|
} else {
|
|
ahb_send_immed(unit,xs->targ,AHB_TARG_RESET);
|
|
/*
|
|
* If we can't use interrupts, poll on completion*
|
|
*/
|
|
if(scsi_debug & TRACEINTERRUPTS)
|
|
printf("wait ");
|
|
if( ahb_poll(unit,xs->timeout)) {
|
|
ahb_free_ecb(unit,ecb,flags);
|
|
xs->error = XS_TIMEOUT;
|
|
return(HAD_ERROR);
|
|
}
|
|
return(COMPLETE);
|
|
}
|
|
}
|
|
/*
|
|
* Put all the arguments for the xfer in the ecb
|
|
*/
|
|
ecb->opcode = ECB_SCSI_OP;
|
|
ecb->opt1 = ECB_SES|ECB_DSB|ECB_ARS;
|
|
if(xs->datalen)
|
|
ecb->opt1 |= ECB_S_G;
|
|
ecb->opt2 = xs->lu | ECB_NRB;
|
|
ecb->cdblen = xs->cmdlen;
|
|
ecb->sense = KVTOPHYS(&(ecb->ecb_sense));
|
|
ecb->senselen = sizeof(ecb->ecb_sense);
|
|
ecb->status = KVTOPHYS(&(ecb->ecb_status));
|
|
|
|
if(xs->datalen) {
|
|
/* should use S/G only if not zero length */
|
|
ecb->data = KVTOPHYS(ecb->ahb_dma);
|
|
sg = ecb->ahb_dma ;
|
|
seg = 0;
|
|
if(flags & SCSI_DATA_UIO) {
|
|
iovp = ((struct uio *)xs->data)->uio_iov;
|
|
datalen = ((struct uio *)xs->data)->uio_iovcnt;
|
|
xs->datalen = 0;
|
|
while ((datalen) && (seg < AHB_NSEG)) {
|
|
sg->addr = (physaddr)iovp->iov_base;
|
|
xs->datalen += sg->len = iovp->iov_len;
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("(0x%x@0x%x)", iovp->iov_len,
|
|
iovp->iov_base);
|
|
sg++;
|
|
iovp++;
|
|
seg++;
|
|
datalen--;
|
|
}
|
|
} else {
|
|
/* Set up the scatter gather block */
|
|
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("%d @0x%x:- ", xs->datalen, xs->data);
|
|
datalen = xs->datalen;
|
|
thiskv = (int)xs->data;
|
|
thisphys = KVTOPHYS(thiskv);
|
|
|
|
while ((datalen) && (seg < AHB_NSEG)) {
|
|
bytes_this_seg = 0;
|
|
|
|
/* put in the base address */
|
|
sg->addr = thisphys;
|
|
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("0x%x",thisphys);
|
|
|
|
/* do it at least once */
|
|
nextphys = thisphys;
|
|
while ((datalen) && (thisphys == nextphys)) {
|
|
/*
|
|
* This page is contiguous (physically) with *
|
|
* the the last, just extend the length *
|
|
*/
|
|
nextphys= (thisphys & (~(PAGESIZ - 1)))
|
|
+ PAGESIZ;
|
|
bytes_this_page = min(nextphys - thisphys,
|
|
datalen);
|
|
bytes_this_seg += bytes_this_page;
|
|
datalen -= bytes_this_page;
|
|
|
|
/* get more ready for the next page */
|
|
thiskv = (thiskv & (~(PAGESIZ - 1)))
|
|
+ PAGESIZ;
|
|
if(datalen)
|
|
thisphys = KVTOPHYS(thiskv);
|
|
}
|
|
/*
|
|
* next page isn't contiguous, finish the seg *
|
|
*/
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("(0x%x)",bytes_this_seg);
|
|
sg->len = bytes_this_seg;
|
|
sg++;
|
|
seg++;
|
|
}
|
|
}
|
|
ecb->datalen = seg * sizeof(struct ahb_dma_seg);
|
|
if(scsi_debug & SHOWSCATGATH)
|
|
printf("\n");
|
|
if (datalen) {
|
|
/* there's still data, must have run out of segs! */
|
|
printf("ahb_scsi_cmd%d: more than %d DMA segs\n",
|
|
unit, AHB_NSEG);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
ahb_free_ecb(unit,ecb,flags);
|
|
return(HAD_ERROR);
|
|
}
|
|
|
|
} else {
|
|
/* No data xfer, use non S/G values */
|
|
ecb->data = (physaddr)0;
|
|
ecb->datalen = 0;
|
|
}
|
|
|
|
ecb->chain = (physaddr)0;
|
|
/*
|
|
* Put the scsi command in the ecb and start it
|
|
*/
|
|
bcopy(xs->cmd, ecb->cdb, xs->cmdlen);
|
|
|
|
/* Usually return SUCCESSFULLY QUEUED */
|
|
if( !(flags & SCSI_NOMASK) ) {
|
|
s = splbio();
|
|
ahb_send_mbox(unit,OP_START_ECB,xs->targ,ecb);
|
|
ahb_add_timeout(ecb,xs->timeout);
|
|
splx(s);
|
|
if(scsi_debug & TRACEINTERRUPTS)
|
|
printf("cmd_sent ");
|
|
return(SUCCESSFULLY_QUEUED);
|
|
}
|
|
|
|
/* If we can't use interrupts, poll on completion */
|
|
ahb_send_mbox(unit,OP_START_ECB,xs->targ,ecb);
|
|
if(scsi_debug & TRACEINTERRUPTS)
|
|
printf("cmd_wait ");
|
|
|
|
do {
|
|
if(ahb_poll(unit,xs->timeout)) {
|
|
if (!(xs->flags & SCSI_SILENT)) printf("cmd fail\n");
|
|
ahb_send_mbox(unit,OP_ABORT_ECB,xs->targ,ecb);
|
|
if(ahb_poll(unit, 2000)) {
|
|
printf("abort failed in wait\n");
|
|
ahb_free_ecb(unit,ecb,flags);
|
|
}
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
return(HAD_ERROR);
|
|
}
|
|
} while (!(xs->flags & ITSDONE));
|
|
|
|
scsi_debug = 0;
|
|
ahb_debug = 0;
|
|
if(xs->error)
|
|
return HAD_ERROR;
|
|
return COMPLETE;
|
|
}
|
|
|
|
/*
|
|
* +----------+ +----------+ +----------+
|
|
* ahb_soonest--->| later |--->| later|--->| later|--->0
|
|
* | [Delta] | | [Delta] | | [Delta] |
|
|
* 0<---|sooner |<---|sooner |<---|sooner |<---ahb_latest
|
|
* +----------+ +----------+ +----------+
|
|
*
|
|
* ahb_furtherest = sum(Delta[1..n])
|
|
*/
|
|
void
|
|
ahb_add_timeout(struct ecb *ecb, int time)
|
|
{
|
|
int timeprev;
|
|
struct ecb *prev;
|
|
int s = splbio();
|
|
|
|
prev = ahb_latest;
|
|
if(prev)
|
|
timeprev = ahb_furtherest;
|
|
else
|
|
timeprev = 0;
|
|
|
|
while(prev && (timeprev > time)) {
|
|
timeprev -= prev->delta;
|
|
prev = prev->sooner;
|
|
}
|
|
if(prev) {
|
|
ecb->delta = time - timeprev;
|
|
ecb->later = prev->later;
|
|
if(ecb->later) {
|
|
ecb->later->sooner = ecb;
|
|
ecb->later->delta -= ecb->delta;
|
|
} else {
|
|
ahb_furtherest = time;
|
|
ahb_latest = ecb;
|
|
}
|
|
ecb->sooner = prev;
|
|
prev->later = ecb;
|
|
}
|
|
else
|
|
{
|
|
ecb->later = ahb_soonest;
|
|
if(ahb_soonest) {
|
|
ecb->later->sooner = ecb;
|
|
ecb->later->delta -= time;
|
|
} else {
|
|
ahb_furtherest = time;
|
|
ahb_latest = ecb;
|
|
}
|
|
ecb->delta = time;
|
|
ecb->sooner = (struct ecb *)0;
|
|
ahb_soonest = ecb;
|
|
}
|
|
splx(s);
|
|
}
|
|
|
|
void
|
|
ahb_remove_timeout(struct ecb *ecb)
|
|
{
|
|
int s = splbio();
|
|
|
|
if(ecb->sooner)
|
|
ecb->sooner->later = ecb->later;
|
|
else
|
|
ahb_soonest = ecb->later;
|
|
|
|
if(ecb->later) {
|
|
ecb->later->sooner = ecb->sooner;
|
|
ecb->later->delta += ecb->delta;
|
|
} else {
|
|
ahb_latest = ecb->sooner;
|
|
ahb_furtherest -= ecb->delta;
|
|
}
|
|
ecb->sooner = ecb->later = (struct ecb *)0;
|
|
splx(s);
|
|
}
|
|
|
|
|
|
extern int hz;
|
|
#define ONETICK 500 /* milliseconds */
|
|
#define SLEEPTIME ((hz * 1000) / ONETICK)
|
|
|
|
void
|
|
ahb_timeout(int arg)
|
|
{
|
|
struct ecb *ecb;
|
|
int unit;
|
|
int s = splbio();
|
|
|
|
while( ecb = ahb_soonest ) {
|
|
if(ecb->delta <= ONETICK) {
|
|
/* It has timed out, we need to do some work */
|
|
unit = ecb->xs->adapter;
|
|
printf("ahb%d targ %d: device timed out\n", unit,
|
|
ecb->xs->targ);
|
|
if(ahb_debug & AHB_SHOWECBS)
|
|
ahb_print_active_ecb();
|
|
|
|
/* Unlink it from the queue */
|
|
ahb_remove_timeout(ecb);
|
|
|
|
/*
|
|
* If it's immediate, don't try abort it *
|
|
*/
|
|
if(ecb->flags & ECB_IMMED) {
|
|
ecb->xs->retries = 0; /* I MEAN IT ! */
|
|
ecb->flags |= ECB_IMMED_FAIL;
|
|
ahb_done(unit,ecb,FAIL);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* If it has been through before, then
|
|
* a previous abort has failed, don't
|
|
* try abort again
|
|
*/
|
|
if(ecb->flags == ECB_ABORTED) {
|
|
printf("AGAIN");
|
|
ecb->xs->retries = 0; /* I MEAN IT ! */
|
|
ecb->ecb_status.ha_status = HS_CMD_ABORTED_HOST;
|
|
ahb_done(unit,ecb,FAIL);
|
|
} else {
|
|
printf("\n");
|
|
ahb_send_mbox(unit,OP_ABORT_ECB,ecb->xs->targ,ecb);
|
|
/* 2 secs for the abort */
|
|
ahb_add_timeout(ecb,2000 + ONETICK);
|
|
ecb->flags = ECB_ABORTED;
|
|
}
|
|
} else {
|
|
ecb->delta -= ONETICK;
|
|
ahb_furtherest -= ONETICK;
|
|
break;
|
|
}
|
|
}
|
|
splx(s);
|
|
timeout((timeout_t)ahb_timeout,(caddr_t)arg,SLEEPTIME);
|
|
}
|
|
|
|
void
|
|
ahb_show_scsi_cmd(struct scsi_xfer *xs)
|
|
{
|
|
u_char *b = (u_char *)xs->cmd;
|
|
int i = 0;
|
|
|
|
if( !(xs->flags & SCSI_RESET) ) {
|
|
printf("ahb%d targ %d lun %d:", xs->adapter,
|
|
xs->targ, xs->lu);
|
|
while(i < xs->cmdlen ) {
|
|
if(i)
|
|
printf(",");
|
|
printf("%x", b[i++]);
|
|
}
|
|
printf("\n");
|
|
} else {
|
|
printf("ahb%d targ %d lun%d: RESET\n", xs->adapter,
|
|
xs->targ, xs->lu);
|
|
}
|
|
}
|
|
|
|
void
|
|
ahb_print_ecb(struct ecb *ecb)
|
|
{
|
|
printf("ecb:%x op:%x cmdlen:%d senlen:%d\n", ecb, ecb->opcode,
|
|
ecb->cdblen, ecb->senselen);
|
|
printf(" datlen:%d hstat:%x tstat:%x delta:%d flags:%x\n",
|
|
ecb->datalen, ecb->ecb_status.ha_status,
|
|
ecb->ecb_status.targ_status, ecb->delta, ecb->flags);
|
|
ahb_show_scsi_cmd(ecb->xs);
|
|
}
|
|
|
|
void
|
|
ahb_print_active_ecb(void)
|
|
{
|
|
struct ecb *ecb;
|
|
ecb = ahb_soonest;
|
|
|
|
while(ecb) {
|
|
ahb_print_ecb(ecb);
|
|
ecb = ecb->later;
|
|
}
|
|
printf("Furtherest = %d\n", ahb_furtherest);
|
|
}
|